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.Management Sciences
Category: Nuclear Power Engineering
The main purpose of control rod in a nuclear reactor is to control the___________________?
A. Chain reaction and hence the power output by regulating the number of secondary neutrons
causing fission
B. Emission of hazardous radiation
C. Conversion of fissile material into fertile material
D. Velocity of the secondary neutrons
Molten sodium is used as a coolant in a fast breeder reactor, because of its_________________?
A. Excellent moderating properties
B. Neutron breeding capability
C. Faster heat removal capability from the core
D. Capability to increase the reaction rate in the core
Extraction of uranium from its ore is done by ______________ method?
A. Chemical
B. Pyrometallurgical
C. Physical beneficiation
D. Electrometallurgical
Radioactive decay of a material involves a _____________ order reaction?
A. Third
B. Second
C. First
D. Zero
Which of the following reactors is operated at high neutron flux and low power level ?
A. Breeder reactor
B. Research reactor
C. Heterogeneous reactor
D. Liquid metal (e.g., molten sodium) cooled reactor
Water is a better coolant than a gas (like CO2, He, N2 etc.), because it_________________?
A. Is a better neutron moderator as well
B. Require comparatively smaller pumps and heat exchanger for a given heat transfer rate
C. Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
D. All A., B. and C.
Mass of a positron is same as that of a/an__________________?
A. Electron
B. α-particle
C. Proton
D. Neutron
Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?
A. Thorium-233
B. Uranium-235
C. Uranium-233
D. Plutonium-239
The radioisotope used to study the thyroid gland is__________________?
A. Iodine
B. Cobalt
C. Iron
D. Carbon
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